Wrench



(No Model.)

J. H. GIBSON.

WRENCH.

Patented July 8, 1890.

WITNESSES: w Fa ATTORNEY.

UNITED STATES PATENT OFFICE.

JOIINII. GIBSON, OF CANTON, OI-IIO.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 431,655, dated July 8, 1890.

Application filed April 7, 1890. Serial No. 346,886. (No model.)

To all whom it may concern.-

-Be it known that 1, JOHN H. GIBSON, a citizen of the United States, and a resident of Oanton, county of Stark, State of Ohio, have invented a new and useful Improvement in Wrenches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to improvements in wrenches, and particularly to that class known as quick-moving monkey-wrenches; and it consists of certain features of construction and combination of parts, as will be hereinafter described, and pointed out in the claim.

Figure 1 is a view in perspective of a wrench illustrating my invention; Fig. 2, a side elevation, partly sectional; Fig. 3, a perspective of a tightening-wedge; Fig. 4, a similar view of the tightening-band, screw, or nut; and Fig. 5, a similar view of the sliding or movable jaw.

of notches a. The sliding jaw D is formed substantially as shown in the drawings, having an aperture 0, through which the bar A is passed, the heel portion having a recess d, in which is placed a rack 6, adapted to the recess cl, and having a series of teeth f, corresponding with and adapted to engage the notches a on the back of the bar A. On the opposite side of the bar, in the toe end of the jaw, is provided an inclined plane g, and on the handle side of said jaw oval cheeks h are provided, projecting from said jaw on each side of the bar toward the handle. Said cheeks h are provided with annular screwthreads 3'.

To secure the teeth f of the rack e in engagement with the notches a of the bar and the jaw against movement on the said bar, a wedge E is provided, having one of its sides It a flat or plane surface to rest and slide upon the bar A, the other or oppositeside an inclined plane m to correspond with the plane g in the jaw, and a neck portion a, circular in cross-section. On the ends of said neck portion is provided shoulders 0, adapted to engage the tightening-nut F, said nut having an annular thread p, corresponding with the thread f on the cheek portions of the jaw D.

In construction the jaw D, with the rack e placed therein, is placed on the bar, the nut with the neck of the wedge placed therein, as shown in Fig. 2, passed on the bar, the wedge entering the jaw, the nut turned onto the checks will carry the wedge in against the plane g. I

In operation, to tighten the jaw to the bar at any desired adjustment the nut is turned on the side or cheek portion of the jaw, driving the wedge against the plane in the jaw to draw the rack-teeth-f into the notches a on the bar, by which engagement the jaw is secured to the bar, and to release the jaw it is onlynecessary to reverse the nut one-half of a revolution to release the teeth f from the notches a, in the handle-bar, after which the jaw may be moved on said bar to a desired point and again secured by turning the nut to wedge the teeth f again in engagement with the notches a.

It will be noticed that by the construction hereinbefore described a quick moving wrench may be constructed embracing the simplicity and durability of the slow-moving but well-known screw or monkey wrench.

Having thus fully described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination,in a wrench,of the handlebar A, having thereon a series of notches a, and a fixed jaw B, a movable jaw D, having therein a rack c to engage said notches, aplane m, and awedge E to engage said plane, threaded side cheeks b and a tightening-nut F about said handle-bar to engage the thread on said cheeks, and the WedgeE to draw the teeth f into the notches a on the handle-bar, as described, and for the purpose set forth.

In testimony whereof I have hereunto set my hand this 31st day of March, A. D. 1890.

, JOHN H. GIBSON. Witnesses:

W. K. MILLER, N. SHAVER.

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